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A. Sophie Blee-Goldman commented on KAFKA-12629: ------------------------------------------------ I'm seeing at least one failure in RaftClusterTest on almost every PR build lately. Looks like it's typically the same TimeoutException mentioned above. Seen on both testCreateClusterAndCreateAndManyTopics() and testCreateClusterAndCreateAndManyTopicsWithManyPartitions() > Flaky Test RaftClusterTest > -------------------------- > > Key: KAFKA-12629 > URL: https://issues.apache.org/jira/browse/KAFKA-12629 > Project: Kafka > Issue Type: Test > Components: core, unit tests > Reporter: Matthias J. Sax > Priority: Critical > Labels: flaky-test > > {quote} {{java.util.concurrent.ExecutionException: > java.lang.ClassNotFoundException: > org.apache.kafka.controller.NoOpSnapshotWriterBuilder > at java.base/java.util.concurrent.FutureTask.report(FutureTask.java:122) > at java.base/java.util.concurrent.FutureTask.get(FutureTask.java:191) > at > kafka.testkit.KafkaClusterTestKit.startup(KafkaClusterTestKit.java:364) > at > kafka.server.RaftClusterTest.testCreateClusterAndCreateAndManyTopicsWithManyPartitions(RaftClusterTest.scala:181)}}{quote} -- This message was sent by Atlassian Jira (v8.3.4#803005)